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Dixit, S. N.
- Occurrence of Helminthostachys zeylanica Hook. In Lakshmipur Forest (Gorakhpur)
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Source
Indian Forester, Vol 92, No 4 (1966), Pagination: 275-277Abstract
Helminthostachys Zeylanica Hook. Which is recorded by Beddome (1883) from Western parts of South India, Assam and Bengal has now been observed in Lakshmipur Forest (Gorakhpur). Roy and Kumar (19591 reported its Occurrence in Kusmi Forest in association with Eugenia heyneana. Due to deforestation of Eugenia trees the fern is fast disappearing. In Lakshmipur Forest, however, a very rich and luxuriant growth or Helminthostachys has heen observed. It is suggested that the Forest authorities must take proper care to avoid any damage to this rare fern and declare this as restricted plant.
- Cardanthera pinnatifida Benth. - a New Record for Northern India
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Indian Forester, Vol 92, No 12 (1966), Pagination: 739-741Abstract
Cardanthera pinnatifida Benth., an aromatic herb of the family Acanthaceae, has been recorded only from South Konkan and Deviman Ghats (North Kanara). However, recently the authors have observed a very rich and luxuriant growth of this plant in Pokharbhinda, a village about 20 km east of Gorakhpur City. The plant is believed to be an effective blood purifier and, therefore, a detailed pharmaceutical study is suggested.- Cleome burmanii Wight & Arn.-a New Record for Northern India from Gorakhpur
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Indian Forester, Vol 93, No 3 (1967), Pagination: 162-163Abstract
Cleome burmanii wight and Arn. Is from Carnatic; recently, it has been observed in Gorakhpur, growing luxuriantly along the north-western margin of Ramgarb Tal, which is situtaed in the eastern part of the city.- Synnema triflorum (Roxb. ex Nees) O. Kuntze.- a New Record for Upper Gangetic Plain
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Indian Forester, Vol 94, No 10 (1968), Pagination: 769-771Abstract
This note presents Synnema triflorum (Roxb. ex Nees) O. Kuntze, as a new record for Upper Gangetic Plain and furnishes important informations regarding its habit, habitat, exact localities of occurrence and frequency in the area.- Cyperaceae of Gorakhpur
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Indian Forester, Vol 98, No 2 (1972), Pagination: 116-129Abstract
The present paper deals witb systematic treatment of the sedge flora of Gorakhpur. In all, 63 species beloging to 7 genera have been collected so far. A brief account of their habitats, phenology and collection number are given in enumeration list. Keys to genera and species have also been provided for the easy identification of Cyperaceae of the area.- Rank of the Subfamilies Loranthoideae and Viscoideae
Authors
1 Department of Botany, University of Gorakhpur, Gorakhpur, U. P., IN
Source
Nelumbo - The Bulletin of the Botanical Survey of India, Vol 4, No 1-4 (1962), Pagination: 49-55Abstract
The family Loranthaceae has been divided into the subfamilies Loranthoideae and Viscoideae (Engler, 1888-89 ; Danser, 1929, 1933a, b). These two subfamilies show great dissimilarity in their morphological as well as their embryological characters.In the Loranthoideae flowers may be unisexual or bisexual, but a calyculus is invariably present. The ovary may contain a lobed or unlobed mamelon, or the mamelon may be extremely reduced or absent. A collenchymatous pad or tube is invariably present in the ovary. The embryo sac is of the Polygonum type. Many embryo sacs may develop simultaneously in the same ovary and their tips grow up into the style and in some cases reach the stigma. The lower end of the sac sometimes produces a caecum. The endosperm is a composite structure formed by the fusion of all the endosperms developing in the same ovary. The first division of the zygote is always vertical and is followed by transverse divisions resulting in a long biseriate proembryo. The fruit shows 4 distinct layers and the viscid layer is situated outside the vascular bundles of the corolla.
In the Viscoideae, flowers are unisexual and the calyculus is absent except in Viscum orientate and V. articulation. The central ovarian papilla has 2 or more archesporial cells, each of which divides to form two dyad cells. Of these the upper dyad cell is the larger and functions, while the lower soon degenerates. Thus the development conforms to Allium type. A peculiar feature is that after the 4-nucleate stage there is a slow but steady curvature of the embryo sac, which causes its lower end to bend out of the papilla and proceed upwards into the carpellary tissue. The egg apparatus differentiates from the quartet in the originally lower pole, which is later situated at a higher level than the upper. Generally only one embryo sac develops which is said to show inverted polarity. The endosperm is derived from the primary endosperm nucleus of a single embryo sac. The first division of the zygote is transverse except in Korthalsella. The embryo lacks a suspensor. The viscous part of the fruit is situated within the vascular bundles of the perigone.
Thus, the Loranthoideae and the Viscoideae show important differences in floral structure, mode of development of the embryo sac, endosperm and embryo, and in the location of the viscid zone of the fruit. These differences adequately warrant the raising of the two subfamilies to the rank of fatnilies. As proposed by Miers (see Danser, 1929), the name Loranthaceae may be retained for the Loranthoideae, and the Viscoideae may be designated Viscaceae.
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- Forest Flora of Nichlaul-III. Phytosociological Studies
Authors
1 Department of Botany, University of Gorakhpur, Gorakhpur, IN
Source
Nelumbo - The Bulletin of the Botanical Survey of India, Vol 13, No 3-4 (1971), Pagination: 180-186Abstract
The present paper deals with the phytosociological studies of Nichlaul forest. Important features of the forest concerning geographical location, topography, soil, climate and vegetational composition have been outlined. Eight types of plant communities have been recognised. The phytosociological characters noted in the field on visual estimation are dominance and sociability of perennial species. Only selected associates of the communities have been included in the table.
The eight types of communities described appear to be interrelated floristically. The sociological values show that 17.8% of the species are common to all the eight communities indicating a high degree of congnuity.
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- Forest Flora of Nichlaul-IV. Trees
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1 University of Gorakhpur, Gorakhpur, IN
Source
Nelumbo - The Bulletin of the Botanical Survey of India, Vol 14, No 1-4 (1972), Pagination: 46-70Abstract
This paper enlists the trees found in Nichlaul forest, Gorakhpur Division (U.P.). Geographical limits, topography, edaphic and climatic factors of the area, its vegetational composition, injurious factors, phenological behaviour of the common plants and an artificial key to the families as well as to the species are given. In all, 109 tree species belonging to 91 genera and 44 families are included, giving field observations, local names, habit, habitat, dominance and sociability. Flowering and fruiting seasons as well as collection numbers of plants are indicated.Full Text
- Some Interesting Polygonums from Gorakhpur
Authors
1 University of Gorakpur, Gorakpur, IN
Source
Nelumbo - The Bulletin of the Botanical Survey of India, Vol 11, No 3-4 (1969), Pagination: 432-433Abstract
No Abstract.Full Text